Automatic hammock back



Nov. 29, 1927.

s. HEYMAN AUTOMATIC HAMMOCK BACK Filed March 16, 1927 smut SAMUELHEY/WAN,

(WM/M sea/rum. HEYMAN, or ranMri-ris,

th lime Tennessee, nssrcuon t me I TO U. l swarms oorarauv,

OF arnurrnrs, rnunnssnn, Aconroniirron or GEORGIA] AUTOMATIC :I-rAM ookBac Application filed Mara. 16,1927. serial at. 11 175 175.

' My invention relatesto means for adjustably suspending the back of ahammock or the like. i I

In accordance with my invention, means are provided to suspend the backof a hamniock or the like so that it may automatically adjust itself toany desired angular position,thereby 'conformingto the curvature ofthebody. The suspending means are preferably arranged at the ends of theback, near its central longitudinal axis and this permits of thesimultaneous adjustment of the top and bottom of the back, which iseffected without the use of bolts, nuts, screws or springs. Further, theconstruction is such that the back is automatically locked in the normalupright position, and when shifted to a selected inclined position,automatically releases itself, when pressure is removed therefrom, andreturns to the normal upright position, thereby producing bothcomfortand safety. The construction is such that the back may be readilyseparated from the frame of the hammock without the use of nuts, bolts,screws, etc.

Other objects and advantages of the in vention will be apparent duringthe course of the following description. 7

In the accompanying drawings, forming a part of this specification, andin which like numerals are employed to designate like parts throughoutthe same,

Figure 1 is a perspective view of one end of a hammock embodying myinvention,

Figure 2 is a side elevation of the stud element of the hinge, I

Figure 3 is a plan View of the same,

Figure 4: is a transverse vertical section on line 4-4 of Figure 1, and,

Figure 5 is a plan view of the'socket element. 1 i

In the drawings, wherein for the purpose of illustration, is shown apreferred em bodiment of my invention. the numeral designates the bottomof a hammock, at each end of which is secured the arm frame 11,including uprights 12. This arm frame is suspended by chains 13 or thelike. The numeral 14 designates the back, including transverse endstrips or bars 15, as shown.

My adjustable supporting means for the back embodies a stud element 16,including by bolts 18 or the like.

an attaching body portion 17, adapted to be rigidly secured to thetransverse strip 15, The outer end of ring movement of the back.

back, no screws,

my invention or the body portidn 17 the form or a flat face 19.Preferably formed integral with this flat face is a headed stud,embodying a head 20 and' cylindrica'l shank 21, producing an annulargroove 22, between the head 20 and the face 19.

The bodyp'orti'o'n l7 provided adjacent to the shank 21 with a forwardtransversely curved'ca1nface22. I The companion ocketf le entembodies anIi-sus ect body portion 23, to straddle the edge of the upright 12 andto be attached thereto by bolts 24, or the like. Extending rearwardlyfrom this L-shaped body 'portion, and preferably formed integraltherewith, is a straight ear 25, having a U-shaped opening 26, which isopened at the top. This opening produces the socket.

in the use of the device, it being understood, of course,- that thereare two of'the suspending devices employed at the opposite ends of theback, the headed stud is inserted within the openings 26 of thesocketelement. This brings the forward curved cam face 22 into contactwith the part 23 carried by the rear edge of the arm frame upright 12.This headed stud is preferably arranged at the central longitudinal axisof the back. When the occupant inclines upon the back, the back will befree to turn upon the studs, as pivots, and hence will automaticallyadjust itself to any desired angular position, to conform to the contourof the back. Further, the curved cam face 22 works against the part 23of the arm and prevents the back from lurching too suddenly into theadjusted a lock to prevent the back from going too far backward orforward. It returns the back to the normal vertical position whenpressure is removed therefrom. The cam face 22 acting upon the upright12 tends to elevate the back 14, and this opposes the swing- It isobvious that the back may be readily separated from the arm frames. Inthe manipulation of the nuts or bolts are employed.

It is to be understood 'that the form of my invention, herewith shownand described is to be taken as a preferred example of the same, andthat various changes in the shape, size and arrangement of parts may beresorted to without departing from the spirit of claims.

position, and acts as the scope of the subjoined Having thus describedmy invention, I

. 1. The combination with the back and arm toward the forward side ofthe back and a stud, the cam'face being eccentric with relation to thestud, a co-actingsocket member secured to the arm frame and having anopening to receive thestudythe cam face being arranged to engage with apart carried by the arm frame.

2. A' hinge for adjustably connecting the back and arm frame of ahammock comprising a member secured to the back and provided with aforward cam face and having a headed stud, the cam face being eccentricwithrespect to the headed. stud, a socket member secured to the armframe and having a substantially vertical opening which is "open at itstop and adapted for the reception of the headed stud, the cam face beingarranged to engage with a part carried by the arm frame.

3. A hinge for adjustably detachably connecting the back and arm frameof a hammo'c comprising a member secured to the back at one end thereofand extending substantially horizontally, said member bein provided witha substantially horizonta pivot stud and'also having a generallyupstanding curved cam face upon its forward side'which is eccentric withrelation to the stud, said cam face extending above and below the studfor substantial distances, and a socket member secured to the arm frameand embodying a substantially vertical plate to contact with the camface and also having a substantially vertical opening to receive thestud.

In testimony whereof I afiix my signature.

SAMUEL HEYMAN.

